JP3239015B2 - Parison transport mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for forming a container in a blow molding mold by blowing a parison from a blank station for forming a parison in a parison mold in one section of a glassware forming apparatus. Convey the parison to the molding station,
It relates to a transport mechanism for reversing.

[0002]

2. Description of the Related Art A conventional individual section type glass container forming apparatus is formed of sections which are arranged side by side along a side portion and which are operated out of phase with each other. Each section is provided with one transport mechanism that transports one or more neck rings. As an example, raising one gob operation initiates a machine cycle when the neck ring is in the return position and the parison mold closes around the neck ring. Glass is filled from the upper end of the parison mold, blown or pressed into the shape of the parison, and some glass is pushed into the space between the neck ring and plunger to form the final container To form a finished end.
The parison mold is then opened, while the parison is retained by the finished end of the container in the neck ring. Then, the reversing mechanism is operated to carry the parison out of the parison molding station, reverse it, and transport it to the blow molding station. At the blow molding station, the blow mold is closed around the parison. The neck ring is then opened to drop the parison into the blow mold. In the blow mold, the parison is supported by beets formed on the container finish end. The reversing mechanism returns the neck ring to the parison molding station and the parison mold closes around the neck mold. This is to replenish the next glass. On the other hand, the parison suspended in the blow mold is blow-molded to have a final container shape.

[0003] In order to increase the speed of the container forming process, various methods have recently been adopted. For example, the introduction of a method of axial cooling of the mold and the reduction of the wall thickness of the finished container may be required. However, the glass thickness when reaching the final forming stage has not been reduced to the same extent as the wall thickness of the finished container has been reduced, and in today's lightweight containers the glass thickness is the highest. Thick ones are often seen at this stage. As the machine speed increases,
The time required to form and cool the finished glass has been inversely reduced. This is a pressing process
When the parison is formed by the plunger,
This is a significant problem. The reason for this is that the neck ring is the last part of the parison mold apparatus to be filled with glass. As a result, the glass in the final product is not sufficiently cooled and, when the parison is conveyed to the blow molding mold, is not sufficiently rigid to maintain a precise shape, thereby deforming the glass into glass. This will impair the shape of the product. Furthermore, the weight reduction of the final product is limited. The reason is that if the distance between the neck ring and the plunger inside it is too small, it will not be possible to push the glass into the neck ring and the container will have an incomplete finish.

One way to solve this problem is to increase the cooling of the neck ring. This method is only somewhat effective. The reason for this is that if the neck ring is cooled too much, the finish of the container will be defective. Also, because the thermal conductivity of the glass is so low, the cooling neck ring cannot easily extract more heat from the glass. A more effective solution to this problem is to increase the contact time in the finishing of the container and the neck ring, but in a device with one neck ring per blank mold, it is commercially acceptable. It is impossible to achieve this without slowing down the machine cycle, which cannot be done. 2 for each parison mold
Providing a set of neck rings would solve the above problem and would have other advantages. The parison can be molded and inverted in the usual way, but when the neck ring is open,
Instead of dropping the parison into the blow mold, the neck ring remains closed for at least part of the blowing process. The extra time that the glassware and neck ring can contact can be extended, if necessary, to the full length of the machine cycle. The parison can take longer to form. The reason is that there is no need to wait for the next cycle until the neck ring flips open and returns to its original position. Rather, as soon as the filled neck ring is released, the empty set of neck rings can be moved to that position. Furthermore, there is also the convenience that the reversal speed can be reduced.
That is, it is not necessary to return the pair of neck rings to be inverted to the inverted position as soon as possible in preparation for the next cycle.

Some attempts have been made to provide two sets of neck rings on separate section-type glass container forming equipment. A major drawback of this method is the interference between one set of neck rings that transports the parison to the blow mold and another empty set of neck rings that returns to the parison forming position. One suggestion is US Pat. No. 4,162,9.
No. 11. In this patent, two sets of neck ring mechanisms are provided, one on each side of the parison mold assembly. The two sets of neck rings operate alternately to carry the outer parison to two blow molding assemblies formed on opposite sides of the parison molding assembly. Such an arrangement is such that the sections are not parallel to each other, but rather must be arranged side by side with one another. This inevitably entails space problems and glass supply problems. In U.S. Pat. No. 3,434,820, a chain carrying a series of neck rings moves in a vertical loop so that the returning neck ring passes without contacting the glass carried by the neck ring. An apparatus is disclosed. Such a device is only useful for machines where the parison is formed in an upright position rather than in an inverted position.

US Pat. No. 4,058,388 discloses a device in which two sets of neck rings are mounted on a rack. Interference is removed by sliding two mechanisms that are parallel on the horizontal line to the center line of the section. Such an arrangement is mechanically complex and requires a relatively wide section.

[0007]

SUMMARY OF THE INVENTION One object of the present invention is to provide a parison in which two sets of neck rings can be provided in each section of a conventional discrete section device so as to cooperate with a set of parison molds. The purpose is to provide a transport mechanism.

[0008]

SUMMARY OF THE INVENTION In one aspect, the present invention comprises a support member, two neck ring arms rotatably mounted within the support member about a horizontal axis, and the neck ring arm comprises: Means for moving toward and away from each other between an open position and a closed position, wherein each of said neck ring arms includes a plurality of neck ring supports when said arms are closed. Opening
A parison transport mechanism for use in a separate section-type glassware forming apparatus, comprising a plurality of neck ring supports formed such that axes are aligned in a plane,
The plane in which the axis of the support opening is arranged is inclined in the direction of the axis around which the neck ring rotates, thereby providing a parison transport mechanism. The present invention comprises, in another aspect, a parison mold assembly consisting of one or more parison molds for forming a glass gob into a parison, and a corresponding number of parisons formed by blow molding the formed parison. Two blow mold assemblies each comprising a blow mold and laterally spaced apart to the left and right of the section center axis, and means for transporting the parison from the parison mold to the blow mold. In one section of the individual section type glassware molding apparatus comprising:
The parison transport means comprises two parison transport mechanisms, one of the parison transport mechanisms transporting the parison to one of the blow molding mold assemblies, and the other of the parison transport mechanism blowing the parison into the blown parison. Conveyed to the other side of the molding mold, the two parison conveying mechanisms are mounted laterally spaced apart on the left and right of the section axis, and each parison conveying mechanism includes a support member and a first Two neck ring arms mounted within said support member for rotation about a horizontal axis between a parison engagement position of said second parison and a second parison release position; and Means for moving the neck ring arms closer to or away from each other between the closed positions, wherein each neck ring arm is in a closed position; And one or more neck ring supports so that a number of neck ring support openings corresponding to the number of parison molds are formed, and the two neck ring arms of the two parison transport mechanisms are provided. The horizontal axis of rotation provides one section of an individual section glassware forming apparatus that is inclined with respect to the central axis of the section.

According to still another aspect of the present invention, there is provided a parison mold assembly provided with a parison mold for forming a glass gob into a parison, and a method wherein the formed parison is formed into a container by blow molding, and the section is closed. A blow molding mold assembly comprising a blow molding mold aligned with said parison mold along the central axis of said section; and means for transporting the parison from said parison mold to said blow molding mold. In one section of the mold section glass product forming apparatus, the parison conveying means includes:
Each parison mechanism comprises a support member, two neck ring arms mounted within the support member so as to be rotatable about a horizontal axis, and the two neck ring arms. Means for moving in a direction toward and away from each other between an open position and a closed position, wherein the neck ring arm is such that a neck ring support opening is formed when the neck ring arm is in the closed position. Wherein the two transport mechanisms are disposed on opposite sides of a central axis in the section, and each transport mechanism is rotatably mounted about a vertical axis, and each transport mechanism comprises: Actuating in sequence to move the neck ring arm from a first position to a second position, wherein in the first position the neck ring support opening is the parison mold Are arranged, and the horizontal axis is inclined to the central axis, wherein in the second position, about 180 around the neck ring arm of the horizontal axis
Moving over an angle provides a section characterized in that the neck ring support opening is in line with the blow molding mold while the transport mechanism is rotating about a vertical axis. The present invention
The following description, and a parison transport mechanism embodying the present invention,
This will become apparent with reference to the drawings of the arrangement of four sections incorporated in this parison transport mechanism.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A parison transport mechanism P is shown in FIG.
It is intended for use in glassware forming equipment consisting of individual sections. The apparatus comprises a parison mold assembly comprising one or more parison molding molds for forming a glass gob into a parison, and a corresponding number of blow molding molds for forming the parison into a blown container. (Or two blow molding mold assemblies) and means for transporting the parison from the parison forming mold to the blow molding mold. This means usually transports the parison directly to the blow mold, but sometimes transports the parison to an intermediate reheating station and then to the blow mold. The parison transport mechanism P is composed of a support member in the form of a block 2 provided with opposing circular trunnions 4 and 6, wherein the trunnions 4 and 6 bear bearings 8 in brackets 10 and 12.
It is supported by. For this reason, the block 2 moves the horizontal reversing shaft 14 (A in FIGS. 1 and 4) between the reversal position and the return position.
(Indicated by line A).

When the block 2 is in the first inverted position (as shown in FIGS. 2 and 3), the flat lower surface 18 and the flat upper surface 19 of the block 2 are horizontal. The block 2 supports a shaft 22 and its shaft 23 (FIG. 3).
BB) is perpendicular to the surface 18;
Therefore, when the block 2 is in the reverse position, it is vertical. The transport mechanism P includes two sets of neck ring support members 24 and 26, which are mounted on the shaft 22 so as to be able to move angularly around the axis 23. The member 24 is composed of lugs 28 and 30, and the member 26 is composed of lugs 32 and 34. For this reason, these lugs are supported by the shaft 22. Lugs 30 and 32 are provided on surfaces 18 and 19 of block 2
Are arranged to face each other. Lugs 28 and 34 face each other and are located outside lugs 32 and 30, respectively. The support members 24 and 26 are composed of members 36 and 38 which are protrudingly positioned, respectively. Neck ring arms 40 and 42 have T-slots 44 and 46, respectively, and are disposed on members 36 and 38 and secured at a desired height.

The neck ring arm 40 has two semi-circular neck ring supports 48, 48, and the neck ring arm 42 has two neck ring supports 50, 50 similar to the support 48. When the neck ring arm is in a closed state, two neck ring support openings 52 are formed as shown in FIG. It should be understood that depending on the configuration of the machine on which the transport mechanism is to be used, the neck ring arm may consist of one or more neck ring supports. If there is more than one neck ring support, the axis of the neck ring opening is in one plane (CC in FIG. 1).
As can be seen from the figure, this plane is inclined at an angle. Specifically, the neck rings 40 and 4
In the illustrated mechanism with respect to the A-A axis on which 2 rotates,
It forms an angle of 67.5 °. The mechanism includes means for moving the neck rings 40 and 42 toward and away from each other between an open position and a closed position. Block 2 consists of two bores 54 and 56, and a high tension spring 58 includes a pin 62 in bore 54 and a lug 28.
And high tension spring 60 extends between pin 66 in bore 56 and lug 3.
2 and 34 to a pin 68 fixed between them. As can be seen from FIG. 4, these springs 58 and 6
A 0 activates the neck ring arms 40 and 42 to close.

In the center bore 70 of the block 2, a piston 72 consisting of a head 74 and a piston rod 76 is mounted. The bore 70 is closed by a bush 78, and the bush 78 has a central bore 79 through which a rod 76 is inserted. Rod 76 has a tapered end 80 that engages cam surfaces 82 and 84 on support members 24 and 26. Air under pressure is
It is supplied to bores 70 on both sides of piston head 74 via bores (not shown) in block 2. When compressed air is supplied to the left hand position of the bore 70 (see FIGS. 3 and 4), an outward force is applied to the piston 72 to support the ends against the cam surfaces 82 and 84. 80 applies a force to the support members 24 and 26. Thus, the neck ring arms 40 and 42 are opened from the closed state with respect to the operation of the springs 58 and 60. By reversing the supply of compressed air, the piston 72 is withdrawn and the springs 58 and 60
Operates to return the neck ring arms 40 and 42 to the closed state. Brackets 10 and 12 are integral with base 86. The base 86 is placed on the top plate 16 of the device and within the device a vertical axis 89 (DD in FIG. 2).
(Shown in lines) are mounted on a vertical shaft 88 which is rotatably mounted around the shaft.

Chain wheel 90 driven by chain 94
Is fixed to the trunnion 4 between the bracket 10 and the block 2. In this way, the chain 94 operates to rotate the neck ring arms 40 and 42 about the axis AA between the return position and the reverse position. The parison transport mechanism P can be incorporated in one section of the glassware forming machine in several different arrangements. A first example is shown schematically in the plan view of FIG. This is a double gob parison mold in which the sections of the individual section glassware forming apparatus consist of two parison molds 96 (two parison molds are shown half open for clarity). A blow mold assembly consisting of an assembly 92 and two blow molds 100 corresponding to the parison mold (also shown with the two blow molds half open). 98 is formed. The molded parison is blown into a container shape. As can be seen from the figure, the blow molding mold 100 and the parison mold 96 are:
In the closed state, they are arranged along the central axis EE of the section.

[0015] In a first embodiment, two of the parison transfer mechanism is P _A and P _B, are arranged on both sides of the center axis E-E. In operation of the section, the mechanism P _A, as can be seen from the figure, operation is started at the first position, the neck ring supporting apertures 52A and 52A are in the closed position aligned with the parison mold 96, of the parison mold In the inverted position, which is on the lower side, the neck ring arm is in a position where the first parison is engaged. The glass gob is then fed into a parison mold 96 and formed into a parison in a conventional manner with a baffle and plunger mechanism (not shown). Then, the parison mold 96 is open, Parison'n is a neck ring support portion 50A of the conveying mechanism P _A 50A
It is still supported by the neck portion at. At this stage, the horizontal axis _AA of the transport mechanism PA is inclined to the central axis of the section at an angle of about 67.5 °. Then, mechanism P _A is moved to the second position by combining the two operations. The two operations are as follows. First, about 18 hours around the horizontal axis AA from the return position to the reverse position.
0 ° to rotate the neck ring 40 _A and 42 _A over, the second is to rotate simultaneously clockwise mechanism about a vertical axis 89A over about 45 °.
With the proper timing of these rotations, the neck ring arm is operating within the boundaries of the section (indicated by the boundaries in FIG. 5). Parison when the mechanism P _A is around the rotation about 22.5 ° of the vertical axis is carried by (clockwise as shown in Figure 5), mechanism P _A and mechanism P _A is the section central axis of Is completely on the left. With these rotations, the neck ring opening is aligned with the open blow mold 100 and the neck ring arm is in the second parison release position with the neck ring arm in the inverted position. The blow mold is then closed around the parison, and the parison is blown, releasing the neck ring arm to release the blown container.

During this operation of the transport device P, a clockwise rotation of about 45 ° about the vertical axis and a simultaneous rotation of the neck ring about 180 ° from the reverse position to the return position about the horizontal axis. the combination of mechanism P _a is performed, the returning operation of the mechanism P _B is performed. Thus, the neck ring supporting apertures 52b and 52b of the mechanism P _B is the position of the parison mold station. To this end, the parison mold closes and is ready to form the next set of parisons. The opening / closing operation of the neck ring arm cooperates with the operation of the transport mechanism as will be understood from the following. Mechanism P _B
Has rotated about 22.5 ° about its vertical axis (clockwise as seen in FIG. 5), the mechanism P _B is completely to the right of the central axis of the section, so that with appropriate timing the mechanism P _A and operation of the P _B without interfering with each other, it will be seen that it is possible to perform simultaneously. A second example of a section is shown in FIG. This is almost similar to the first example. In the second example has a two transverse mechanisms P _C and P _D, blow molding mold assembly, parallel opening molds rather than opening the mold bow type formed in the first embodiment Is provided. The parallel mold assembly is a slightly smaller space than the bow assembly. In the second arrangement,
Cullet chutes 102 and 104 are formed, each cullet chute extending a desired distance to an adjacent section. In normal operation, the second example, if it operates in the same manner as the first embodiment, it is required to reject a parison held in the transfer mechanism P _C, about a vertical axis 89C not rotate simultaneously, by a mechanism P _C, the neck-ring arms 40C and 42C are horizontal axis A-
It will rotate around A. Thus, when the neck ring opening is opened, the parison is held in the neck ring opening on the cullet chute 102 where the parison falls.

This means that when you start a section
Very convenient. When setting a section,
The first parison led to the casting mold was cooled
Cannot be properly blown in,
It must be removed from the machine by hand. The example in FIG.
As mentioned in the description of FIG.
Allow the parison to reach the required temperature in the
It is automatically rejected. Figure 7 shows a double gob
Third section of one section of glassware forming equipment consisting of
Is shown. This section covers the glass gob
From two parison molds 108 that are molded into parisons
The configured parison mold assembly 106 (opened
Half of the parison is shown) and the molded parison
Two blow molding moldings to blow into container shape
Blow molding molds composed of
An assembly is provided. This blow molding mold assembly
Body 110 and 112 are paired left and right of section centerline 116
In other words, they are arranged laterally apart. The third example is
Parison transport mechanism P_EAnd P_FAnd is composed of
You. P _ETo the blow molding mold assembly 110.
For transporting lisson, P_FAssembled parison
It is transported to 112. Parison transport mechanism P_EWhen
P_FMounted laterally separated across the axis of the section
And the transport mechanism P is a parison transport mechanism P_EAnd P
_FIs configured not to rotate around the vertical axis
You. As can be seen, the two mechanisms P_EAnd P_FNet
Horizontal axis of rotation of cling arm is inside section
Inclined to the axle.

In the operation of this example, by rotating the neck ring about 180 ° about a horizontal axis, the parison transport mechanism operates alternately to transport the formed parison to the blow molding mold and the mechanism P _E carries the parison to the mold assembly 110, mechanism P _F will carry a parison mold assembly 112.

[Brief description of the drawings]

FIG. 1 is a plan view of a parison transport mechanism embodying the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is an exploded plan view of a first section embodying the present invention.

FIG. 6 is an exploded plan view of a second section embodying the present invention.

FIG. 7 is an exploded plan view of a third section embodying the present invention.

[Explanation of symbols]

 2 block 4, 6 trunnion 24, 26 support member 40, 42 neck ring arm 50 neck ring support 52 neck ring support opening 58, 60 spring 82, 84 cam surface 88 vertical axis 89 vertical shaft 92 parison mold assembly 96 parison mold 98 Blow molding mold assembly 100 Blow molding mold

────────────────────────────────────────────────── (5) References JP-A-53-30618 (JP, A) U.S. Pat. No. 4,629,911 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C03B 9 / 193-9/197 C03B 9/30 C03B 35/04

Claims (8)

(57) [Claims] 1. A support member, two neck ring arms rotatably mounted within said support member about a horizontal axis, and wherein said neck ring arm is moved between an open position and a closed position.
Means for moving the neck ring arms toward and away from each other, wherein each of the neck ring arms has a plurality of neck ring support openings when the arms are closed so that the axes are aligned in a plane. A parison transport mechanism for use in a separate section-type glassware forming apparatus, comprising a plurality of neck ring supports formed in a suitable state, wherein the plane in which the axis of the support opening is arranged rotates the neck ring A parison transport mechanism characterized by being inclined in the axial direction. 2. A parison mold assembly comprising one or more parison molds for molding a glass gob into a parison, and a corresponding number of blow moldings for forming the molded parison into a container by blow molding. Equipped with molds,
An individual section glass product comprising two blow mold assemblies, laterally spaced apart on the left and right of the central axis of the section, and means for transporting the parison from the parison mold to the blow mold. In one section of the molding apparatus, the parison transport means comprises two parison transport mechanisms, one of the parison transport mechanisms for transporting a parison to one of the blow molding mold assemblies; The other of the parisons is conveyed to the other of the blow molding molds, and the two parison conveying mechanisms are mounted on the left and right sides of the section axis, spaced apart in the lateral direction, and each parison conveying mechanism The support member and the first parison engaging position and the second parison releasing position around a horizontal axis. Two neck ring arms rotatably mounted within the support member, and means for moving the neck ring arms closer to or away from an open position and a closed position. Each neck ring arm is provided with one or more neck ring supports such that when the neck ring arms are closed, a number of neck ring support openings corresponding to the number of parison molds are formed. A section of a discrete section glassware forming apparatus, wherein the horizontal rotation axes of the two neck ring arms of the two parison transport mechanisms are inclined with respect to a central axis of the section. 3. The two parison transport mechanisms are of the same construction and are arranged symmetrically with respect to the axis of the section, and the two horizontal axes for rotation are aligned with the axis of the section. 3. A symmetrical inclination with respect to
Section described in. 4. The parison mold assembly comprises a plurality of parison molds, each parison transport mechanism comprising a number of neck ring supports corresponding to the parison mold, wherein the neck ring supports have an axis and a shaft in a plane. 4. The section of claim 3, wherein the section has as many neck ring support apertures as the neck ring support is aligned with, and the plane is inclined with respect to the axis about which the neck ring arm rotates. . 5. A parison mold assembly comprising a parison mold for forming a glass gob into a parison; and a molded parison formed into a container by blow molding. When the section is in a closed state, the parison is formed on a center axis of the section. A blow mold assembly having a blow mold along the parison mold, and means for transporting the parison from the parison mold to the blow mold. In one section, the parison transport means comprises two parison transport mechanisms, each of the parison mechanisms comprising a support member and two neck rings mounted within the support member for rotation about a horizontal axis. Arm and the two neck ring arms open and closed Means for moving in a direction toward or away from each other between positions, wherein said neck ring arm comprises a neck ring support such that a neck ring support opening is formed when in the closed position. The two transport mechanisms are located on opposite sides of a central axis in the section, and each transport mechanism is rotatably mounted about a vertical axis, and each transport mechanism operates in sequence. Moving the neck ring arm from a first position to a second position, wherein at the first position, the neck ring support opening is aligned with the parison mold, and the horizontal axis is aligned with the central axis. In the second position, the neck ring support opening is moved by the neck ring arm moving about 180 ° about the horizontal axis, thereby causing the neck ring support opening to blow. It is aligned with the write-forming mold, sections, characterized by being rotated around the same time the transport mechanism vertical axis. 6. A parison mold assembly comprising a plurality of parison molds for forming a glass gob into a parison; and a molded parison formed into a container shape by a blown shape. A blow molding mold assembly comprising a corresponding number of blow molding molds, and means for conveying a parison from said parison mold to said blow molding mold, in one section of a separate section glassware forming apparatus. The parison conveying means comprises two parison conveying mechanisms according to claim 1, wherein the mechanisms are arranged on both sides of the center axis, and each of the conveying mechanisms operates in order to move the neck ring arm to a first position. From the position to the second position, at the first position The neck ring support opening is aligned with the parison mold, and in the second position, the neck ring arm moves about 180 ° about the horizontal axis,
A section wherein the neck ring support opening is aligned with the blow molding mold and is rotatably mounted about a vertical axis so that the transport mechanism can rotate about the vertical axis at the same time. . 7. The section comprises a cullet chute adjacent to the blow mold assembly, and when the parison transport mechanism is operated without rotating about a vertical axis, the mechanism moves the parison into place. 7. The parison mold assembly for carrying to a location on the cullet chute and arranged to release a parison to be rejected into the cullet chute. Section described in one of the. 8. The apparatus according to claim 2, wherein the neck ring arm of each parison transport mechanism is mounted so as to be pivotally supported between an open position and a closed position.
Section according to any one of claims 1 to 7.